logging

logging is a cursor rule for coding agents from cmaranho/rn-agent-skills. It costs 116 tokens per session, scanned A, original, MIT.

A set of rules for recording useful application events and errors in production.

In plain words
What is it for?
Use it when adding logs, choosing log levels, sending production errors to monitoring, or deciding what context can safely be recorded.
Why use it?
It keeps logs consistent and useful for diagnosing problems without exposing passwords, personal data, or other secrets. It also avoids noisy debug output in released builds.

Cursor rule

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/cmaranho/rn-agent-skills/logging
Clone the repo
git clone --depth 1 https://github.com/cmaranho/rn-agent-skills

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for logging

README.md
[![agentmods](https://agentmods.dev/badge/rules/cmaranho/rn-agent-skills/logging.svg)](https://agentmods.dev/rules/cmaranho/rn-agent-skills/logging)
Your own site
<a href="https://agentmods.dev/rules/cmaranho/rn-agent-skills/logging"><img src="https://agentmods.dev/badge/rules/cmaranho/rn-agent-skills/logging.svg" alt="Measured on agentmods" height="20"></a>
Per session 116 This file is loaded in full into every session.
When invoked 116 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00116 $0.00116
Opus 5 $0.00058 $0.00058
Sonnet 5 $0.00023 $0.00023
Haiku 4.5 $0.00012 $0.00012

Measured 3d ago against content hash 1524cbb0f873, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

logging scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

rules/logging.mdc · 14 lines

What it actually says

Logging

  • Use um logger centralizado; sem console.log em código de produção.
  • Níveis apropriados: debug, info, warn, error.
  • Nunca registre segredos, credenciais ou dados pessoais.
  • Erros reportados a serviço de monitoramento (crash/erro reporting) em produção.
  • Logs incluem contexto suficiente para diagnóstico (identificadores, operação), sem ruído.
  • Logs de debug removidos ou desativados em builds de release.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 14 lines · 116 tokens per session scan A 1524cbb0f873

Subscribe to this mod's changes

logging is a cursor rule published in the GitHub repository cmaranho/rn-agent-skills (2 stars, last pushed 2mo ago), licensed MIT. It adds 116 tokens to every session, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.